The question of maximum number never really arose, but it's remarkable that we never saw more than six people beamed at a time. Indeed, in "The Apple", it appears that at first, six people beam down, and only then do three more appear - and no explicit story logic is provided for why the latter three (McCoy and two guards) would have opted to be delayed.

On the other hand, the number of pads on the transporter platform doesn't seem to be closely related to what is being transported, considering that people and objects may extend past the limits of a pad or cover several of them (say, when lying down injured). Which makes for an odd contrast with "Where No Man Has Gone Before" where the unconscious Gary Mitchell is deliberately held standing upright within the supposed "confines" of a single pad, and our other two characters pull their supporting hands away for the duration of the transport! Such a weird maneuver would seem to require pretty pressing reasons, which are never given.

On a separate issue, the ship probably had several of those six-pad transporters, as the single set underwent modifications that more or less force us to assume it represented several separate spaces. Moreover, the transporter was indicated to be on different parts of the ship in different episodes - for example in "Dagger of the Mind" it brings van Gelder to the lower levels rather than to the more familiar saucer Deck Seven. But perhaps only one platform could send its signal down to the target planet at a time, explaining "The Apple"? Certainly some transporter resources were bottlenecks and single points of failure, as seen in "The Enemy Within"...

Let's not forget "Day of the Dove", in which significantly more than six people were successfully. Also in "The Apple", Spock gets attacked by the Rose of Sharon from Hell and Kirk orders everyone beamed up simultaneously.

Oops, I did forget. Thanks for the correction; "Day of the Dove" would seem to make it clear that one transporter console can beam up at least nine people simultaneously - although one transporter platform is only shown materializing five people at a time, while the others are "on hold", perhaps being interpretable as the combined use of two transporter platforms and their separate "hold areas" or buffers.

What might be the largest number of people beamed up or down at one go with UFP technology? Supposedly the entire Baku village was to go in ST:INS, and there were plenty of refugees inside the system in "Counterpoint", but the simultaneous materialization or dematerialization was not demonstrated in those cases.

The question of maximum number never really arose, but it's remarkable that we never saw more than six people beamed at a time. Indeed, in "The Apple", it appears that at first, six people beam down, and only then do three more appear - and no explicit story logic is provided for why the latter three (McCoy and two guards) would have opted to be delayed.

On the other hand, the number of pads on the transporter platform doesn't seem to be closely related to what is being transported, considering that people and objects may extend past the limits of a pad or cover several of them (say, when lying down injured). Which makes for an odd contrast with "Where No Man Has Gone Before" where the unconscious Gary Mitchell is deliberately held standing upright within the supposed "confines" of a single pad, and our other two characters pull their supporting hands away for the duration of the transport! Such a weird maneuver would seem to require pretty pressing reasons, which are never given.

On a separate issue, the ship probably had several of those six-pad transporters, as the single set underwent modifications that more or less force us to assume it represented several separate spaces. Moreover, the transporter was indicated to be on different parts of the ship in different episodes - for example in "Dagger of the Mind" it brings van Gelder to the lower levels rather than to the more familiar saucer Deck Seven. But perhaps only one platform could send its signal down to the target planet at a time, explaining "The Apple"? Certainly some transporter resources were bottlenecks and single points of failure, as seen in "The Enemy Within"...

Timo Saloniemi

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I have the official blueprints to the Enterprise D and indeed there are multiple transporter rooms, and also multiple cargo transporters as well, and multiple holodecks as well. The holodecks have built in replicators as well, so if someone eats something that came from the holodeck, it was real food he ate, same reason why Wesley Crusher fell into the pond on the holodeck in the first episode, and was still wet when he stepped out of the Holodeck.

Another interesting thing is there are tanks for dolphins on the lower decks of the Enterprise even though they weren't seen in the series. Also this ship has a Captain's Yacht, which was never used during the Next Generation series. The Enterprise E version of that Yacht was used in the subsequent movies.

The fact that there are multiple transporter rooms aboard Picard's E-D was never really in dispute: basically every time they used a transporter room, they specified its number ("Room 3" was over-represented), and for example "11001001" included dialogue about a very large number of transporter rooms, up to "transporter twenty".

However, the transporter rooms of Kirk's ship were never mentioned in plural or given numbers. So we have to go for speculation and deduction in this case (which is closer to what the original poster was interested in).

Day of the Dove" would seem to make it clear that one transporter console can beam up at least nine people simultaneously

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In The Apple perhaps the transporter could have dematerialize the first six and held them, then dematerialized the additional three, and rematerialized all nine at the same time?

Using this method, the Enterprise with only a single six pad transporter could materialize a hundred "Starfleet Marines" on a planet's surface all at the same time.

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It would depend on how much power was available and the number of clear transporter frequencies. I think the TOS-E had multiple transporter rooms but only one was active at a time. If all were active, they could be all used to do a "tactical" aka fast beam down.

The fact that there are multiple transporter rooms aboard Picard's E-D was never really in dispute: basically every time they used a transporter room, they specified its number ("Room 3" was over-represented), and for example "11001001" included dialogue about a very large number of transporter rooms, up to "transporter twenty".

However, the transporter rooms of Kirk's ship were never mentioned in plural or given numbers. So we have to go for speculation and deduction in this case (which is closer to what the original poster was interested in).

Timo Saloniemi

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If you go strictly by on-screen canon, there are some contradictory signs, but never anything conclusive. There is the repeated reference by Kirk and others to "the transporter room" generically, but never anything conclusive that it was singular or plural in terms of the overall ship's equipment.

Now, Stephen Whitfield & Gene Roddenberry were conclusive in "The Making of Star Trek" in '68. They specified multiple six-man transporter rooms, as well as 22-man and cargo facilities as well.

. . . Stephen Whitfield & Gene Roddenberry were conclusive in "The Making of Star Trek" in '68. They specified multiple six-man transporter rooms, as well as 22-man and cargo facilities as well.

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Specifically:

There are eleven personnel and cargo transporter stations aboard the vessel. Four are the familiar main operational stations, two are cargo transporters, five are emergency personnel transporters which can handle twenty-two people each but involve a risk factor at such power loads and are limited to use in ship-abandoning emergencies.

"Day of the Dove" would seem to make it clear that one transporter console can beam up at least nine people simultaneously - although one transporter platform is only shown materializing five people at a time, while the others are "on hold", perhaps being interpretable as the combined use of two transporter platforms and their separate "hold areas" or buffers.

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In a similar vein, at the end of The City on the Edge of Forever, we saw seven people dematerialized simultaneously from the planet's surface. Of course, we never saw how they materialized back aboard ship.

. . . Stephen Whitfield & Gene Roddenberry were conclusive in "The Making of Star Trek" in '68. They specified multiple six-man transporter rooms, as well as 22-man and cargo facilities as well.

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Specifically:

There are eleven personnel and cargo transporter stations aboard the vessel. Four are the familiar main operational stations, two are cargo transporters, five are emergency personnel transporters which can handle twenty-two people each but involve a risk factor at such power loads and are limited to use in ship-abandoning emergencies.

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And that's where Franz Joseph got the number and types of transporter for the blueprints.

How many Enterprise crew were in the two combined landing parties in "The Apple"?

How many Enterprise and Klingon personnel beamed up from Beta XII-A in "Day of the Dove"?

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Nine and nine. That is, six plus three materializing on the planet in "The Apple", and nine simultaneously dematerializing in "Day of the Dove" and then four plus five materializing aboard the ship.

The manipulation of people-in-transit in "Day of the Dove" is pretty cool without actually being too intricate: the Klingons get delayed, and then turned around so that the security team can grab them from behind... No need to "deactivate weapons" or any subtle stuff like that!

Four are the familiar main operational stations, two are cargo transporters

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...So, do we see a cargo transporter in "Dagger of the Mind" where only cargo is supposedly being handled, and the stowaway within it ends up somewhere near Deck 14? Or would that be one of the four personnel transporters, as it's identical to them in design?

Four are the familiar main operational stations, two are cargo transporters

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...So, do we see a cargo transporter in "Dagger of the Mind" where only cargo is supposedly being handled, and the stowaway within it ends up somewhere near Deck 14? Or would that be one of the four personnel transporters, as it's identical to them in design?

Timo Saloniemi

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As I recall, the "cargo transporter" in "Dagger of the Mind" is more or less identical to the personnel stage in virtually every episode.

This raises an interesting question: the STTNG Tech Manual states that cargo transporters are defaulted to a molecular resolution setting, instead of the quantum resolution that personnel transporters must operate on. One must assume the transporters on the 1701 operate in the same fashion. Unbeknownst to our heroes, Simon van Gelder is hiding in the containers meant for the Bureau of Penology beamed up from Tantalus on the cargo transporter. It seems to me he's lucky not to have materialized as 90 kilograms of wet hamburger.

One must assume the transporters on the 1701 operate in the same fashion. Unbeknownst to our heroes, Simon van Gelder is hiding in the containers meant for the Bureau of Penology beamed up from Tantalus on the cargo transporter. It seems to me he's lucky not to have materialized as 90 kilograms of wet hamburger.

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Nah, its the same reason we don't need to assume that the 1701's phasers are limited to sublight combat. They're different continuities with different tech trees